Capture-Recapture Method for Estimating the Number of Problem Drug Users: The Case of the Netherlands

In this paper, two methods have been compared to estimate the number of problem drug users (PDU): the treatment multiplier (TM) method and the capture-recapture(CRC) method using national police register data and data from probation services and treatment institutes for addiction. This paper introduces the CRC method as a more practical alternative to the TM method, with similar results.